Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Klara Major , APRN, CNP

Nurse Practitioner โ€ข Winfield, IL

Active NPI 1093229858 Individual Practitioner Female Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

25 N Winfield Rd Ste 2202
Winfield, IL 601901379

Call 6309334847 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

25 N Winfield Rd Ste 2202

Winfield, IL 601901379

Telephone 6309334847
Fax 6309333826
Other Listings in Public Data

NPPES lists 1 additional practice-address record in Libertyville, IL. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 2 distinct group names: Central Dupage Physician Group; Northwestern Medical Faculty Foundation. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

2017

Medicare patients

133 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $42,833 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Paid by Medicare

About $33,710 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

30-day fills

189 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$3,826 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $68.49 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

9 years (graduated 2017)

CMS Doctors and Clinicians data list 2017 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2017

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Klara Major has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Klara Major as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Winfield and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 60% of clinicians listed under Nurse Practitioner in Winfield, IL (2024, 56 clinicians with data). Median for this group: 287. Middle half: 98 to 509.

More Medicare Part B services than 65% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.

Medicare-allowed amount

A higher Medicare-allowed amount than 65% of clinicians listed under Nurse Practitioner in Winfield, IL (2024, 56 clinicians with data). Median for this group: $23,001. Middle half: $8,490 to $45,639.

A higher Medicare-allowed amount than 75% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.

Paid by Medicare

A higher Medicare payment amount than 70% of clinicians listed under Nurse Practitioner in Winfield, IL (2024, 56 clinicians with data). Median for this group: $17,322. Middle half: $6,396 to $35,717.

A higher Medicare payment amount than 75% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.

Medicare Part D prescriptions

Close to the middle for clinicians listed under Nurse Practitioner in Winfield, IL (2024, 48 clinicians with data). Median for this group: 181. Middle half: 85 to 630.

Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: 259. Middle half: 80 to 930.

Part D drug cost

Close to the middle for clinicians listed under Nurse Practitioner in Winfield, IL (2024, 48 clinicians with data). Median for this group: $7,692. Middle half: $867 to $84,425.

Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: $10,867. Middle half: $976 to $113,945.

80 active clinicians are listed under Nurse Practitioner with a practice address in Winfield, IL (4,894 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Winfield

43.8% of these 80 clinicians have the CMS telehealth indicator.

80% of these 80 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2025

Program year 2025 (payments made January 1 โ€“ December 31, 2025): fewer than 11 records totaling $68.49.

Manufacturer Payment Nature Product Type Amount ($)
AstraZeneca Pharmaceuticals LP
Education
In-kind items and services
IMFINZI General $68.49

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ€“2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2018โ€“2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
225 94 $204.63 $102.18
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
62 56 $368.88 $149.27
99497 Advance care planning, first 30 minutes
53 49 $252.00 $64.76
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
34 17 $268.00 $153.68
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
23 22 $145.00 $68.06
G0316 Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th
14 13 $111.00 $26.10

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Gabapentin Gabapentin 39 1,518 $448.72 11
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 23 316 $408.70 15
Morphine Sulfate Er Morphine Sulfate 23 590 $275.06 โ€”
Oxycodone Hcl Oxycodone Hcl 23 241 $312.11 โ€”
Hydromorphone Hcl Hydromorphone Hcl 20 355 $289.29 โ€”
Fentanyl Fentanyl 18 510 $1,795.12 โ€”
Morphine Sulfate Morphine Sulfate 13 128 $133.66 โ€”
Mirtazapine Mirtazapine 12 540 $162.91 โ€”

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2022-01-06
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

License # reported to NPPES IL 209016578

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner - Adult Health

NUCC Taxonomy Code: 363LA2200X

License # reported to NPPES IL 209.016578
Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - NURSE PRACTITIONER

Medicare Enrollment ID

I20180212001811

Enrollment State Jurisdiction

IL

PECOS Control ID

5991065930

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Northwestern Medical Faculty Foundation

25 N Winfield Rd, Winfield, IL 601901222

Phone: 6302320280

Central Dupage Physician Group

0 N025 Winfield Rd, Winfield, IL 601901237

Phone: 6302600600

Secondary Practice Locations

801 S Milwaukee Ave

Libertyville, IL 600483204

Phone: 8473622900

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

4 listed
Carol Harms , APRN, CNP

Nurse Practitioner

NPI 1528236601

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Robin Kleronomos , APN

Nurse Practitioner

NPI 1114229713

Advanced Practice Nurse

Lauren Sanchez , APRN, CNP

Nurse Practitioner

NPI 1134818875

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Dr. Mark Speyer , MD

Internal Medicine - Hospice and Palliative Medicine

NPI 1649464488

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
๐Ÿ“
Updated Practice Location January 06, 2022

Registered at 25 N WINFIELD RD STE 2202, WINFIELD, IL 601901379 (Tel: 6309334847)

๐Ÿ“
Updated Business Mailing Address January 06, 2022

Registered at 25 N WINFIELD RD STE 2202, WINFIELD, IL 601901379 (Tel: 6309334847)

๐Ÿ‘ค
Provider Name / Credentials Updated January 06, 2022

Recorded as KLARA MAJOR, APRN, CNP

โœ…
NPI Profile Active November 30, 2017

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) November 30, 2017

Registered at 801 S MILWAUKEE AVE, LIBERTYVILLE, IL 600483204 (Tel: 8473622900)

๐Ÿ“
Business Mailing Address (Initial Record) November 30, 2017

Registered at 4534 N KENNETH AVE, CHICAGO, IL 606304160 (Tel: 7735847535)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) November 30, 2017

Recorded as KLARA MAJOR

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 30, 2017

Nurse Practitioner (license number reported to NPPES: IL 209.016578)

๐ŸŸข
Initial NPI Registration & Enumeration November 30, 2017

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1093229858
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 30, 2017
Last Update: January 06, 2022
Sole Proprietor: No

Other Nurse Practitioners in Winfield

All Nurse Practitioners in Winfield

Mailing Address

25 N Winfield Rd Ste 2202

Winfield, IL 601901379

Phone: 6309334847

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.